pete286/jopl.c

158 lines
3 KiB
C
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#include <dir.h>
#include <stdlib.h>
#include <time.h>
#include "jorth.h"
#include "adlib.h"
#include "kbd.h"
#include "timer.h"
#include "serial.h"
cell ontick = 0;
void f_adlib_read() {
PUSHU(adlib_read());
}
void f_adlib_write() {
adlib_write(TOP().u & 0xff, ST1().u & 0xff);
DROP(2);
}
volatile int WAKE = 0;
static void timer_callback() {
if (adlib_read() & 0x20) {
WAKE = 1;
}
}
int DONE = 0;
static void f_quit() {
DONE = 1;
}
void f_keyWasPressed() {
int k = TOP().i;
TOP().i = keyWasPressed(k);
consumeKey(k);
}
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void f_keydown() {
TOP().i = keyIsDown(TOP().i);
}
char *gather_input() {
static char buf[128];
static int ibuf = 0;
if (bioskey(1)) {
int key = bioskey(0);
char ch = key & 0xff;
if (ch == 0x08) {
if (ibuf > 0) {
printf("%c %c", ch, ch);
ibuf --;
}
} else {
buf[ibuf] = ch;
ibuf ++;
if (ch == 0x0d) {
printf("\n");
buf[ibuf] = 0;
ibuf = 0;
return buf;
} else {
printf("%c", ch);
}
}
}
return NULL;
}
void f_seremit() {
ser_write_byte(TOP().i);
if (TOP().i == '\n') {
ser_write_byte('\r');
}
DROP(1);
}
void f_random() {
TOP().i = random(TOP().i);
}
void do_repl(char *exe) {
adlib_init();
timer_init(TIMER_18HZ);
f_init(exe);
ser_init(SER_COM2, BAUD_19200, SER_8N1);
CDEF("seremit", f_seremit);
CDEF("_quit", f_quit);
CDEF("adlib!", f_adlib_write);
CDEF("adlib@", f_adlib_read);
CDEF("key-start", kbd_init);
CDEF("key-end", kbd_cleanup);
CDEF("key-debounce", kbd_debounce);
CDEF("key-pressed", f_keyWasPressed);
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CDEF("key-down", f_keydown);
CDEF("rnd", f_random);
f_loadfile("jopl.jor");
ontick = f_lookupcp("ontick");
timer_setcallback(timer_callback);
f_taskloop();
while (!DONE) {
char *buf = gather_input();
if (buf) {
PUSHS(buf);
f_runstring("REPL send");
}
if (WAKE) {
WAKE = 0;
if (ontick.p != NULL) {
f_execcp(ontick);
}
}
f_taskloop();
}
}
#define RIGHT 0x01
#define LEFT 0x02
#define CTRL 0x04
#define ALT 0x08
void keything() {
int key, modifiers, done;
done = 0;
while (!done) {
/* function 1 returns 0 until a key is pressed */
while (bioskey(1) == 0);
/* function 0 returns the key that is waiting */
key = bioskey(0);
/* use function 2 to determine if shift keys were used */
modifiers = bioskey(2);
if (modifiers)
{
printf("[%#02x", modifiers);
if (modifiers & RIGHT) printf(" RIGHT");
if (modifiers & LEFT) printf(" LEFT");
if (modifiers & CTRL) printf(" CTRL");
if (modifiers & ALT) printf(" ALT");
printf("]");
}
/* print out the character read */
printf("'%c' %#02x\n", key & 0xff, key);
if ((key & 0xff) == 'q') done = 1;
}
}
int main(int argc, char *argv[]) {
// keything();
randomize();
do_repl(argv[0]);
return 0;
}